Chapter 1 – General Description The SJ-EN option board is an Ethernet communication interface for Hitachi SJ700, L700, SJ300 and L300P series AC variable frequency inverters. The board can be installed in either of the two available option slots in the applicable inverter.

Chapter 1 SAFETY PRECAUTIONS HIGH VOLTAGE: This symbol indicates high voltage. It calls your attention to items or operations that could be dangerous to you and other persons operating this equipment. Read the message and follow the instructions carefully. WARNING: Indicates a potentially hazardous situation that, if not avoided, can result in serious injury or death.

Chapter 1 CAUTION: Be sure not to touch the surface or terminals of the SJ-EN Ethernet option board while the inverter is energized; otherwise there is the danger of electric shock. CAUTION: The software lock modes described in the SJ300 inverter manual are NOT supported via the SJ-EN option board.

Chapter 2 Installing the Option Board Power down the inverter and wait at least five minutes before moving to the next step. Open and remove the lower terminal cover. Confirm that the red CHARGE LED is extinguished and that the DC bus is fully discharged before proceeding further, otherwise there is the danger of electric shock.

Chapter 2 User Interface The SJ-EN has six LEDs to convey module status and activity. Four LEDs next to the RJ45 connector: STATUS (GREEN) – This LED will be ON whenever the SJ-EN is receiving proper power from the inverter and the self diagnostics have shown the board to be functioning normally. LINK (GREEN) –...

NetEdit3 Software is provided on the CD-R enclosed with the SJ-EN option board. It can also be downloaded at no cost from Hitachi America’s web site (www.hitachi-america.us/inverters). This software is required to configure the board. It can also be used to update the SJ-EN firmware in the event of a future update. NetEdit3 is compatible with Microsoft Windows 98, Windows ME, Windows 2000, Windows XP, and Windows NT4.

NetEdit3. You can also input a Name for the device, and a Description. The default Name will be “Hitachi Drive”, and the default Description will be “SJ300/L300P Hitachi Drive”. The device’s IP Address will also be shown. Change this to the desired IP address for your Modbus/TCP network.

Chapter 4 Chapter 4 – Operation Setting Up the Inverter for Ethernet Network Operation Once the SJ-EN board has been properly configured and connected to a network as described in Chapter 3, it is capable of reading data from and writing data to the inverter. However if it is desired to have either the RUN command and/or the speed reference come from the Ethernet master, you must change two inverter parameters as shown in the following table.

Chapter 5 Chapter 5 – Troubleshooting In general, the first step to troubleshooting should be to inspect the status LEDs on the SJ-EN board, in addition to the inverter operator/keypad display. These will give valuable clues to the nature of the problem. In addition, the inverter operator/keypad will provide diagnostic information for certain types of errors.

Appendix Appendix – Parameter List Note: Parameters in BOLDFACE can be edited while inverter is in the RUN mode. “RO” means the parameter is Read Only, and “R/W” means the value can be read or written. Modbus Modbus Inverter Read/ Start Parameter Name Data Range...